公开(公告)号：US20230246608A1

公开(公告)日：2023-08-03

申请号：US18132425

申请日：2023-04-10

Applicant: LANSUS TECHNOLOGIES INC.

Inventor： HUAN HUANG ,  JIASHUAI GUO

IPC: H03F3/24 ,  H03F3/60

CPC classification number: H03F3/24 ,  H03F3/60 ,  H03F2200/451

Abstract: A method for isolating transmission lines of a radio frequency power amplifier and a transmission structure of the radio frequency power amplifier are provided. The method includes steps of setting a distance between adjacent two of transmission lines on a chip substrate to be greater than 2.5 times a width of each of the transmission lines, and disposing shielding lines at an inner side of each of the transmission lines and an outer side of each of the transmission lines opposite to the inner side; wrapping a permalloy layer on an outer wall of each of the transmission lines; and wrapping an aluminum layer on an outer wall of the permalloy layer, defining a plurality of grooves on an outer wall of the aluminum layer at intervals, where the plurality of the grooves are recessed inward and in an inverted triangular structure.